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Depression at Vitamin D CouncilNote: Dr. Cannell found the benefits of vitamin D while working with mentally ill prisoners, who, like many other prisoners, have little access to the sun

Mental Health Disorders Now Leading Cause of Non-Fatal Illness Worldwide Mercola Sept 2013
Lancet: mental disorders and substance abuse combined were the leading cause of non-fatal illness worldwide in 2010, contributing nearly 23 percent of the total global disease burden!
Mentions vitamin D: people with the lowest levels of vitamin D were 11 times more prone to be depressed than those who had normal levels